The X-Lite X-803 RS Ultra Carbon Full-Face Helmet is the new racing helmet from racing oriented brand X-Lite. It is an upgrade of the X-Lite X-803 Ultra Carbon Full Face helmet. It is not an entirely new model, but more of a upgrade. Some differences are more visible than other. This helmet is a premium race helmet made for people that want the absolute best of the best.
The shell is made of carbon. A great advantage of carbon is that you need less material to reach the same strength as glass fiber. This results in a very lightweight shell. Another nice feature is the aerodynamics of this helmet. It was tested in a wind tunnel, which is a characteristic of a quality helmet.  One of the biggest difference between the X803 and the  X-Lite X803 RS Ultra Carbon Full-Face Helmet is the large spoiler in the rear, which’ll provide stability at higher speeds. This spoiler is also removable and can be replaced by the smaller spoiler which you will find in the box as well. This makes the helmet versatile. You can also see that the chin has been made longer to give you more space and comfort. This helmet comes in 3 shell sizes.

For ventilation, you’re getting similar options to the previous X-lite helmets. So, you’ve got an adjustable vent in the chin and the brow. When you ride, the brow vents on the  XLite X803 RS Ultra Carbon really enable you to feel the cool wind on the forehead which is very comfortable. You’re also getting two more adjustable vents at the top of the head. If we look in the back, then you can see the air come out the exhausts in the back there.

The aerodynamics of this helmet is very-high end. The helmet was tested in a wind tunnel. And you can really feel this when wearing the helmet. The deep channels in the EPS shell carry a lot of cool air into the shell and extract the warm air via the spoiler at the back. Adding the smaller spoiler in the box gives you the possibility to ride in a Sport-Touring position. So the X-lite X803 RS Ultra Carbon gives you some good versatility here. The liner will also help out a little bit there.
The visor for the X-803 is actually giving you some great options there. It’s wide and it’ll give you a wide field of view, but it the helmet also comes with a gold visor in the box, as well as a pinlock in the box, so you can already get kitted out for sunny weather and you can prevent any potential fogginess. You’ve also got a nose guard here to help prevent fogging up the visor with the breath and it gives the helmet a cool look. 
The liner on this helmet also looks and feels very nice. It’s made of X-Lite’s “Carbon fitting racing experience comfort inner padding”, This liner is very comfortable, it’s soft, and it has carbon filaments which help with temperature control and preventing static. In addition to this, the liner is also removable and washable. The liner is adjustable, to give better fit across a range of different head shapes.